The NC 401(k) and NC 457 Plans are exclusively available to public servants like you and provide low-cost and diverse investment options. The State offers low-fee, tax-deferred programs to provide a way to save money to supplement retirement income.The employee component is similar to the State's § 401(k) and § 457 plans and allows the employee to voluntarily contribute to the Plan. The 457(b) is a supplemental retirement plan that allows employees to set aside payroll-deducted contributions on a pre or after-tax basis. Complete an NC 457 Deferred Compensation. Plan Enrollment Form (forms and instructions are available on the website). 3. A 457(b) plan is a tax-deferred retirement savings plan. Funds are withdrawn from an employee's income without being taxed and are only taxed upon withdrawal.